Why is my paint scratching off so easily?
Also to know is, is Primer supposed to scratch off?
When to use Primer To perform a test, paint a few small patches on your piece and leave it to dry for 24 hours. Now you can give it a scratch with your fingernail to see if the paint has adhered well or if it peels off easily. If your piece is peeling then a coat of Primer will likely be the easiest way to proceed!
Keeping this in view, why is my paint chipping so easily?
If paint peels from an interior wall, the reason for the peeling paint is often an improperly prepared surface and moisture seeping through from the wall to the paint surface. Wipe off the wall with the tack cloth to remove dust. Apply the primer to the wall first to seal the wall and prevent moisture problems.
Peeling paint is usually caused by moisture getting into the wood and breaking the paint's bond with the wood fiber. Most moisture comes from outside, but sometimes it collects in the wall and works its way outward.